---

name: proof-of-work description: Proof artifact generation patterns for task validation. Covers screenshots, test results, deployments, and confidence scoring. version: 0.1.0 tags: [proof, validation, screenshots, tests, deployment] keywords: [proof, artifact, screenshot, test, deployment, confidence, validation]

plugin: autopilot updated: 2026-01-20

Proof-of-Work

Version: 0.1.0 Purpose: Generate validation artifacts for autonomous task completion Status: Phase 1

When to Use

Use this skill when you need to:

• Generate proof artifacts after task completion
• Capture screenshots for UI verification
• Parse and report test results
• Calculate confidence scores for task validation
• Determine if a task can be auto-approved

Overview

Proof-of-work is the mechanism that validates task completion. Every finished task must include verifiable artifacts that demonstrate the work was done correctly.

Proof Types by Task

Bug Fix Proof

Feature Proof

UI Change Proof

Screenshot Capture

Playwright Pattern:

Copyimport { chromium } from 'playwright';

async function captureScreenshots(url: string, outputDir: string) {
  const browser = await chromium.launch({ headless: true });
  const context = await browser.newContext();
  const page = await context.newPage();

  // Desktop
  await page.setViewportSize({ width: 1920, height: 1080 });
  await page.goto(url);
  await page.waitForLoadState('networkidle');
  await page.screenshot({
    path: `${outputDir}/desktop.png`,
    fullPage: true,
  });

  // Mobile
  await page.setViewportSize({ width: 375, height: 667 });
  await page.goto(url);
  await page.waitForLoadState('networkidle');
  await page.screenshot({
    path: `${outputDir}/mobile.png`,
    fullPage: true,
  });

  // Tablet
  await page.setViewportSize({ width: 768, height: 1024 });
  await page.goto(url);
  await page.waitForLoadState('networkidle');
  await page.screenshot({
    path: `${outputDir}/tablet.png`,
    fullPage: true,
  });

  await browser.close();
}

Confidence Scoring

Algorithm:

Copyinterface ProofArtifacts {
  testResults?: { passed: number; total: number };
  buildSuccessful?: boolean;
  lintErrors?: number;
  screenshots?: string[];
  testCoverage?: number;
  performanceScore?: number;
}

function calculateConfidence(artifacts: ProofArtifacts): number {
  let score = 0;

  // Tests (40 points)
  if (artifacts.testResults) {
    if (artifacts.testResults.passed === artifacts.testResults.total) {
      score += 40;
    }
  }

  // Build (20 points)
  if (artifacts.buildSuccessful) {
    score += 20;
  }

  // Coverage (20 points)
  if (artifacts.testCoverage) {
    if (artifacts.testCoverage >= 80) score += 20;
    else if (artifacts.testCoverage >= 60) score += 15;
    else if (artifacts.testCoverage >= 40) score += 10;
    else score += 5;
  }

  // Screenshots (10 points)
  if (artifacts.screenshots) {
    if (artifacts.screenshots.length >= 3) score += 10;
    else if (artifacts.screenshots.length >= 1) score += 5;
  }

  // Lint (10 points)
  if (artifacts.lintErrors === 0) {
    score += 10;
  }

  return score;
}

Confidence Thresholds

Proof Summary Template

Copy# Proof of Work

**Task**: {issue_id}
**Type**: {task_type}
**Confidence**: {score}%

## Test Results
- Total: {total}
- Passed: {passed}
- Failed: {failed}
- Coverage: {coverage}%

## Build
- Status: {status}
- Duration: {duration}

## Screenshots
- Desktop: proof/desktop.png
- Mobile: proof/mobile.png
- Tablet: proof/tablet.png

## Artifacts
- test-results.txt
- coverage.json
- build-output.txt

Examples

Example 1: Feature Proof Generation

Copyconst proof = {
  testResults: { passed: 15, total: 15 },
  buildSuccessful: true,
  lintErrors: 0,
  screenshots: ['desktop.png', 'mobile.png', 'tablet.png'],
  testCoverage: 85,
};

const confidence = calculateConfidence(proof);
// 40 (tests) + 20 (build) + 20 (coverage) + 10 (screenshots) + 10 (lint) = 100%

Example 2: Partial Proof

Copyconst proof = {
  testResults: { passed: 12, total: 15 },  // Some failing
  buildSuccessful: true,
  lintErrors: 2,
  screenshots: ['desktop.png'],
  testCoverage: 65,
};

const confidence = calculateConfidence(proof);
// 0 (tests fail) + 20 (build) + 15 (coverage) + 5 (1 screenshot) + 0 (lint errors) = 40%
// Result: Validation failed, must iterate

Best Practices

• Always capture screenshots for UI work
• Run full test suite, not just affected tests
• Include coverage report for features
• Build must pass before any proof is valid
• Store proofs in session directory for debugging
• Generate proof summary in markdown for Linear comments